Thermopower of high-T_c cuprates

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dc.creatorChoi, Mu-Yong
dc.creatorKim, J. S.
dc.date1998-10-08
dc.date.accessioned2026-07-07T06:31:42Z
dc.date.available2026-07-07T06:31:42Z
dc.descriptionWe have studied the thermopower of La_2CuO_{4+z} and Nd_2CuO_{4-y} which undergo an antiferromagnetic transition near room temperature and Bi_2Sr_{2-x}La_xCuO_{6+z} for which a broad spectrum of doping is possible. The thermopower of La_2CuO_{4+z} and Nd_2CuO_{4-y} is seen to exhibit an anomaly at the Neel temperature, whereas the resistivity is not. The extrapolated zero-temperature intercept of the thermopower, which is known to be positive for hole-doped cuprate superconductors, is found to become negative for Bi_2Sr_{2-x}La_xCuO_{6+z} above some critical doping-level. The data strongly suggest that the thermopower of high-T_c cuprates contains a large amount of extra contribution in addition to the usual diffusion thermopower. We discuss origins of the extra contribution in the thermopower.
dc.description4 pages, 3 eps figures, RevTeX, to be published in Physical Review B
dc.identifierhttps://arxiv.org/abs/cond-mat/9810101
dc.identifierhttp://arxiv.org/abs/cond-mat/9810101
dc.identifierPhys. Rev. B 59, 000192 (1999)
dc.identifierdoi:10.1103/PhysRevB.59.192
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/98686
dc.subjectSuperconductivity
dc.titleThermopower of high-T_c cuprates
dc.typetext

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